Berbalang description nitpicks:
- Astral Travel: use "This ability does not enable the berbalang to... " instead of "The berbalang is not able to...". A Berbalang may very well posess a separate item or spell to allow him to cross from the Astral plane into another. No reason to prohibit him from doing so, even though the Astral Travel ability itself isn't sufficient.
- Yes, the Astral form should probably have a silver cord. No reason to start inventing new rules for projections into the astral plane.
- Fort save DC 15 or die gives a 60% chance of dying. I think the original 75% chance of death is too large to make it interesting anyway. How about a Will save DC 15 instead? Higher chances of survival makes for a more interesting creature (otherwise the PCs might never even get to realize the berb's special powers!). Plus maxing out the Will save gives fewer additional bonuses to the berbalang because it's projection already has immunity against mind-influencing effects.
- "If the projection is wounded, the berbalang cannot produce...": should that be "wounded or slain"? Or should be let the berbalang take revenge immediately if it's projection is slain and it survives? Could be open to abuse (berb cleric with maxed out save and Luck domain has his projection commit suicide rather than having to wait for X days).
- Berbalang society: Too much detail, IMHO, I liked the old version better. For example, there's no reason to specify it doesn't attack those weaker creatures on the Astral plane. It's a CE creature, it can do whatever it (or rather the DM) damn well pleases on the Astral Plane. Besides, the 1E FF specifically states it *does* hunt and kill on the Astral plane. I would also leave out the entire second half of the first paragraph. It' unnecessarily detailed, and it makes them sound more like a LG than a CE creature. These kinds of details are probably best left up to the DM anyway.
- "Once the projection finds a slain human, or kills one, it picks up the body and returns to the lair with it. As it travels, it feasts upon the body leaving nothing but bones after one minute." This is rather confusing. Why does it take the body back to it's lair, if it starts eating while it's underway and arrives at the lair with nothing but some bones? Does it collect the bones or something? Why not find a safe spot to eat the body, *then* return to it's lair? How about this:
"Once the projection finds a slain human, or kills one, it flies off with the body. It can feast upon the body while it travels, leaving nothing but bones after one minute. As soon as the projection returns to the lair, the berbalang will awaken immediately, satisfied and refreshed."